描述 Description

TPA3223 is a high-power Class-D amplifier that enables efficient operation at full-power, idle and standby. The device features closed-loop feedback which provides low distortion across the audio band and delivers excellent sound quality. The device operates in AD modulation and can drive up to 2 x 200 W into 4-Ω load or 1 x 400 W into 2-Ω load.

The TPA3223 features a single-ended or differential analog-input interface that supports up to 2 VRMS with four selectable gains: 20 dB, 23.5 dB, 32 dB and 36 dB. The TPA3223 also achieves >90% efficiency, low idle power and ultra-low standby power (<0.1 W). This is made possible through the use of 60-mΩ MOSFETs, an optimized gate drive scheme and low-power operating modes. To further simplify the design, the device integrates essential protection features including undervoltage, overvoltage, cycle-by-cycle current limit, short circuit, clipping detection, overtemperature warning and shutdown, and DC speaker protection.

特性 Features

? Wide 10-V to 42-V Supply Voltage Range
? Stereo (2 x BTL) and mono (1 x PBTL) configurations
? Output Power at 10% THD+N
? 200-W Stereo into 4 Ω in BTL Configuration
? 300-W Mono into 3 Ω in PBTL Configuration
? 425W Mono into 2 Ω in PBTL Configuration

? Output Power at 1% THD+N
? 170-W Stereo into 4 Ω in BTL Configuration
? 325-W Mono into 2 Ω in PBTL Configuration

? Closed-loop feedback design
? 110-dB SNR (A-weighted)

? Low-Power operating modes
? Standby modes: mute and shutdown
? Single-channel BTL operation

? Multiple input options to simplify pre-amp design
? Differential or single-ended analog inputs
? Selectable Gains: 20 dB, 23.5 dB, 32 dB, 36 dB

? Integrated Protection: Undervoltage, Overvoltage, Overcurrent, Cycle-by-cycle Current Limit, Short Circuit, Clipping Detection, Overtemperature Warning and Shutdown, and DC Speaker Protection
? Easily synchronize muliples devices
? 90% Efficient Class-D Operation (4 ?)